Maximize the efficiency of magnification transitions with fluid precision using Vortex’s Switchview Throw Lever. The Switchview attaches and detaches easily to the magnification ring. Constructed of skeletonized, lightweight hard-anodized aluminum, the Vortex Switchview is one tough accessory that will serve you well. See Specs for fitment information. Mfg: Vortex Optics SPECS: SV-2 fits Razor HD with rubber magnification ring, Viper PST, HS-T, HS LR, HS models with metal magnification ring, Viper XBR Crossbow Scope & Diamondback HP scopes. Strike Eagle 1-8×24 riflescope. SV-3 fits Razor HD Gen II Scopes with metal magnification ring. SV-4 fits Striker E